The effectiveness of the proposed harmonic synthesis technique is examined experimentally by IMs with static air-gap eccentricity and dynamic air-gap eccentricity states under different load conditions.
The NN model prediction can be implemented for online application such as rolling schedule optimisation and dynamic roll gap control, due to its fast calculation ability.
In data preparation, 200 data sets are collected for each IM condition (healthy, static air-gap eccentricity fault, and dynamic air-gap eccentricity fault) in each of five load conditions.
For dynamic air-gap eccentricity fault diagnosis, the data sets corresponding to healthy IM condition and static air-gap eccentricity condition will belong to one class; the data sets corresponding to dynamic air-gap eccentricity condition belong to the other class.
In dynamic air-gap eccentricity, the rotor rotates around the geometric axis of the stator, where the position of the minimum air-gap length rotates with the rotor.
It demonstrates that the proposed HS technique is a useful tool to detect IM dynamic air-gap eccentricity fault in different load conditions.
The averaged successful rates of ten runs three-fold cross validation in terms of dynamic air-gap eccentricity fault diagnosis using SVM and LDA for classification is given in Tables 5 and 6, respectively.
The dynamic air-gap eccentricity is implemented by intentionally bending rotor in the center 0.0127 cm to 0.0254 cm, while making sure the rotor does not bind the stator in the IM [25].
Static air-gap eccentricity fault detection is considered as a binary classification problem; the data sets collected from a healthy IM and an IM with the dynamic air-gap eccentricity defect belong to one class; the data sets collected from the IM with the static air-gap eccentricity defect belong to the other class.
In lungs, heart, skin, mesentery, muscles, and most of other vascular areas, the endothelium transports particles in the range of ∼50 500 nm via dynamic intercellular gaps and transcellular fenestrae and vacuolar pathways initiated in endocytic vesicles.
